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铝及铝合金材料进展 预览
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作者 邓运来 张新明 《中国有色金属学报》 EI CAS CSCD 北大核心 2019年第9期2115-2141,共27页
本文概述了中国铝及铝合金材料产业与高强铝合金技术发展现状。重点介绍了高强铝合金研发及其材料制备技术的重要进展,为铝材产业、铝合金科技的持续发展提供新的思路。
关键词 铝合金 材料产业 技术
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铝的发展、应用和新机遇
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作者 于华 刘堃 《化学教育(中英文)》 CAS 北大核心 2019年第9期1-5,共5页
从铝元素的发现开始,逐步介绍性质优异的铝元素在工业制造以及人们日常生活等方面不可取代的应用,同时探讨了铝及其化合物的生物毒性。随着纳米技术蓬勃发展,金属铝纳米结构作为极具潜力商业化的、可持续的局域表面等离子体材料受到人... 从铝元素的发现开始,逐步介绍性质优异的铝元素在工业制造以及人们日常生活等方面不可取代的应用,同时探讨了铝及其化合物的生物毒性。随着纳米技术蓬勃发展,金属铝纳米结构作为极具潜力商业化的、可持续的局域表面等离子体材料受到人们广泛关注。总结近几年铝纳米粒子的合成方法,以及在局域表面等离子体打印、表面增强拉曼检测等方面的应用。 展开更多
关键词 铝元素 固体火箭推进剂 生物毒性 铝纳米结构 局域表面等离子体共振
On the friction effects on rigid-body penetration in concrete and aluminium-alloy targets 预览
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作者 C.G. Chai A.G. Pi +1 位作者 Q.M. Li F.L. Huang 《Defence Technology(防务技术)》 CSCD 2019年第4期576-581,共6页
The friction on the projectile shank is usually excluded in the penetration analysis due to the difficulties to measure the pressure and frictional coefficient.In this article,the frictional force on projectile shank ... The friction on the projectile shank is usually excluded in the penetration analysis due to the difficulties to measure the pressure and frictional coefficient.In this article,the frictional force on projectile shank is discussed indirectly through the comparison between experimental data and empirical/analytical formulas of the penetration depth for both concrete and aluminium-alloy targets.It is found that the effect of the frictional force along the projectile shank can be further discussed by the afore comparison and discussion and cannot be ignored because of the relatively large effecting area,especially for deep penetration of concrete and aluminium-alloy targets,where the friction will account for more proportion of penetration resistance. 展开更多
关键词 PENETRATION FRICTION CONCRETE Aluminium
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有色金属行业与宏观经济数据的相关性分析与预测 预览
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作者 盛文 邹建成 +1 位作者 袁雪华 安柯 《世界有色金属》 2019年第10期1-3,共3页
根据国家统计局资料,选取有色金属冶炼与压延加工主营收入、铜材产量、铝材产量与公开的宏观统计数据GDP、M2、全社会固定资产投资、工业增加值、全国电网投资规模、建筑业GDP、空调产量、汽车产量;分析选取经济数据与有色行业数据之间... 根据国家统计局资料,选取有色金属冶炼与压延加工主营收入、铜材产量、铝材产量与公开的宏观统计数据GDP、M2、全社会固定资产投资、工业增加值、全国电网投资规模、建筑业GDP、空调产量、汽车产量;分析选取经济数据与有色行业数据之间的相关性,相关性系数在[0.95,1]区间,呈高度正相关。 展开更多
关键词 有色金属冶炼压延加工主营收入 铜材 铝材 宏观经济数据 相关性
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Investigations on tribo-mechanical behaviour of Al-Si10-Mg/sugarcane bagasse ash/SiC hybrid composites
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作者 Shankar Subramanian Balaji Arunachalam +1 位作者 Kawin Nallasivam Alokesh Pramanik 《中国铸造:英文版》 SCIE 2019年第4期277-284,共8页
The effect of mechanical and tribological behaviour of aluminium alloy(Al-Si10-Mg) with sugarcane bagasse ash and silicon carbide reinforced metal matrix composites were investigated. Al-Si10-Mg alloy reinforced with ... The effect of mechanical and tribological behaviour of aluminium alloy(Al-Si10-Mg) with sugarcane bagasse ash and silicon carbide reinforced metal matrix composites were investigated. Al-Si10-Mg alloy reinforced with 9 wt.% of treated sugarcane bagasse ash particles of size(< 75 μm) and 0 wt.%, 3 wt.%, 6 wt.% and 9 wt.% of silicon carbide particles of size(< 25 μm) were fabricated using the stir casting method. Morphological analysis was done using scanning electron microscopy to access the distribution of reinforcement particles in the matrix alloy. Tensile, hardness, and impact strengths were increased with an increase in weight fraction of SiC reinforcement particles in the aluminium alloy, while the ductility was decreased. Pin-on-disc dry sliding wear test was carried out with 10, 20 and 30 N loads with a sliding speed of 10 m·s-1 for a constant time period of 20 min to predict the wear behaviour of the developed composites. Worn surfaces of the wear-tested specimens and fracture morphology structure of the tensile-tested specimens were analysed. Results show that the composites reinforced with sugarcane bagasse ash and silicon carbide particles exhibit superior wear resistance. 展开更多
关键词 aluminium alloy SUGARCANE BAGASSE ASH silicon CARBIDE mechanical properties WEAR fracture morphology
慢性铝暴露对大鼠精子质量的影响 预览
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作者 元辉雄 庞艳芳 +5 位作者 刘子源 高丽君 陈偲 梁治鹏 李枫芳 陈文成 《右江民族医学院学报》 2019年第1期26-29,共4页
目的探讨慢性铝暴露对大鼠精子质量的影响及其与睾丸组织超氧化物歧化酶(SOD)活力和丙二醛(MDA)含量的关系。方法取体重为180~200g雄性Wistar大鼠96只,根据饮水中AlCl3的半数致死量(LD50),采用AlCl3水溶液饮水暴露法使大鼠染铝,设置高... 目的探讨慢性铝暴露对大鼠精子质量的影响及其与睾丸组织超氧化物歧化酶(SOD)活力和丙二醛(MDA)含量的关系。方法取体重为180~200g雄性Wistar大鼠96只,根据饮水中AlCl3的半数致死量(LD50),采用AlCl3水溶液饮水暴露法使大鼠染铝,设置高剂量组[1/5LD50,256.72mg/(kg·d)]、中剂量组[1/10LD50,128.36mg/(kg·d)]、低剂量组[1/20LD50,64.18mg/(kg·d)]及对照组[0mg/(kg·d)],每组随机分配24只,大鼠连续16周饮水染铝。饲养结束,对大鼠附睾精子进行精子质量检测,并检测睾丸组织的SOD活性及MDA含量。结果与对照组比较,低、中、高剂量组的前向精子百分比均偏低,死精子百分比、形态异常精子百分比偏高,差异均有统计学意义(P<0.01)。低、中、高剂量组的睾丸组织SOD活性低于对照组,而MDA含量高于对照组,差异均有统计学意义(P<0.01)。Spearman相关分析显示前向运动精子百分比与铝染毒剂量、睾丸组织MDA含量呈负相关(P<0.01),与睾丸组织SOD活性呈正相关(P<0.001);死精子及形态异常精子百分比与铝染毒剂量、睾丸组织MDA含量呈正相关(P<0.001),与睾丸组织SOD活性呈负相关(P<0.001)。结论铝会降低精子质量,脂质过氧化可能是其作用机制之一。 展开更多
关键词 暴露 精子质量 超氧化物歧化酶 丙二醛
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The role of aluminium in the preservation of microbial biosignatures 预览
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作者 Alan Levett Emma J. Gagen +5 位作者 Hui Diao Paul Guagliardo Llew Rintoul Anat Paz Paulo M. Vasconcelos Gordon Southam 《地学前缘:英文版》 CAS CSCD 2019年第3期1125-1138,共14页
Demonstrating the biogenicity of presumptive microfossils in the geological record often requires supporting chemical signatures, including isotopic signatures. Understanding the mechanisms that promote the preservati... Demonstrating the biogenicity of presumptive microfossils in the geological record often requires supporting chemical signatures, including isotopic signatures. Understanding the mechanisms that promote the preservation of microbial biosignatures associated with microfossils is fundamental to unravelling the palaeomicrobiological history of the material. Organomineralization of microorganisms is likely to represent the first stages of microbial fossilisation and has been hypothesised to prevent the autolytic degradation of microbial cell envelope structures. In the present study, two distinct fossilisation textures (permineralised microfossils and iron oxide encrusted cell envelopes) identified throughout iron-rich rock samples were analysed using nanoscale secondary ion mass spectrometry (NanoSIMS). In this system, aluminium is enriched around the permineralised microfossils, while iron is enriched within the intracellularly, within distinct cell envelopes. Remarkably, while cell wall structures are indicated, carbon and nitrogen biosignatures are not preserved with permineralised microfossils. Therefore, the enrichment of aluminium, delineating these microfossils appears to have been critical to their structural preservation in this iron-rich environment. In contrast, NanoSIMS analysis of mineral encrusted cell envelopes reveals that preserved carbon and nitrogen biosignatures are associated with the cell envelope structures of these microfossils. Interestingly, iron is depleted in regions where carbon and nitrogen are preserved. In contrast aluminium appears to be slightly enriched in regions associated with remnant cell envelope structures. The correlation of aluminium with carbon and nitrogen biosignatures suggests the complexation of aluminium with preserved cell envelope structures before or immediately after cell death may have inactivated autolytic activity preventing the rapid breakdown of these organic, macromolecular structures. Combined, these results highlight that aluminium may play an important ro 展开更多
关键词 Aluminium MICROFOSSILS BIOSIGNATURES NANOSIMS Organomineralisation
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Synthesis and characterisation of Al2O3 nanoparticles as catalyst prepared by polymer co-precipitation method 预览
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作者 Majid Farahmandjou Nazafarin Golabiyan 《材料工程研究(英文)》 2019年第2期40-44,共5页
Alumina (Al2O3) is a very interesting material with broad applicability as a support for various catalytically active phases and ceramic materials. Aluminium oxide (Al2O3) nanoparticles were synthesized by aluminium c... Alumina (Al2O3) is a very interesting material with broad applicability as a support for various catalytically active phases and ceramic materials. Aluminium oxide (Al2O3) nanoparticles were synthesized by aluminium chloride hexahydrate as precursor and polyvinylpyrrolydon (PVP) as surfactant and polymer agent. The samples were characterized by high resolution transmission electron microscopy (HRTEM), field effect scanning electron microscopy (FESEM), X-ray diffraction (XRD) and electron dispersive spectroscopy (EDS). XRD pattern exhibited gamma-Al2O3 to alpha-Al2O3 structural phase transition in the samples. The mean diameter of sphere-like as-prepared nanoparticles was around 26 nm and mean diameter of annealed sample was around 10 nm as estimated by XRD technique and direct HRTEM observation. The surface morphological studies from SEM depicted the size of alumina decreases with increasing annealing temperature. The effect of PVP surfactant on the morphology of the alumina nanoparticles has been investigated. EDS showed peaks of aluminium and oxygen in prepared Al2O3. 展开更多
关键词 aluminium OXIDE NANOPARTICLES PVP SURFACTANT SYNTHESIS
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拜耳法赤泥硫酸浸出铝离子实验研究 预览
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作者 陈毛毛 周永毅 《化工设计通讯》 CAS 2019年第9期133-133,135共2页
酸浸是湿法冶金中提取有价金属重要的步骤。以赤泥中含量最丰富的Al3+为研究对象,添加一定量助溶剂,采用8mol/L的硫酸酸浸,在液固比为15mL/g的条件下,通过改变反应温度和反应时间得到最佳的酸浸出条件。对比常见的几种酸浸反应模型,得... 酸浸是湿法冶金中提取有价金属重要的步骤。以赤泥中含量最丰富的Al3+为研究对象,添加一定量助溶剂,采用8mol/L的硫酸酸浸,在液固比为15mL/g的条件下,通过改变反应温度和反应时间得到最佳的酸浸出条件。对比常见的几种酸浸反应模型,得出赤泥中Al3+浸出动力学的研究符合收缩未反应芯模型(USCM)。结果表明:Al3+的酸浸符合产物层扩散控制,反应的活化能为27.68kJ/mol。 展开更多
关键词 赤泥 酸浸 动力学 活化能
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电感耦合等离子体发射光谱法测定不锈钢中的铬、镍、锰、铜、钛、铝 预览
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作者 高会兵 董龙腾 +3 位作者 王生进 刘春虎 刘才云 孙国卿 《化学分析计量》 CAS 2019年第5期86-89,共4页
建立电感耦合等离子体发射光谱仪同时测定不锈钢中铬、镍、锰、铜、钛、铝6种元素含量的方法.用20 mL王水溶解样品,铬、镍、锰、铜、钛、铝的分析谱线分别为283.563,231.604,259.373,324.754,334.941,308.215 nm.铬、镍、锰、铜、钛、... 建立电感耦合等离子体发射光谱仪同时测定不锈钢中铬、镍、锰、铜、钛、铝6种元素含量的方法.用20 mL王水溶解样品,铬、镍、锰、铜、钛、铝的分析谱线分别为283.563,231.604,259.373,324.754,334.941,308.215 nm.铬、镍、锰、铜、钛、铝的质量浓度与其信号强度均呈良好的线性关系,线性相关系数均不小于0.999,检出限分别为0.007,0.009,0.002,0.007,0.002,0.008μg/mL.测定结果的相对标准偏差为0.17%~2.80%(n=6),加标回收率为96.50%~103.70%.用该法测定国家标准物质,测定值与标准值一致,相对误差为0.05%~3.03%.该方法准确、可靠,可用于不锈钢中铬、镍、锰、铜、钛、铝的测定. 展开更多
关键词 电感耦合等离子体发射光谱法 不锈钢
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铝土矿市场行情分析及展望 预览
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作者 李好月 李飞 龚元翔 《世界有色金属》 2019年第16期149-152,共4页
铝是国民经济建设、战略性新兴产业和国防科技工业中的重要基础材料,而铝土矿作为生产铝的最主要来源,是我国紧缺的大宗矿产之一,已被列入我国战略性矿产目录。本文基于2010年~2019年铝土矿行业数据,介绍了国内外铝土矿资源情况,分析了... 铝是国民经济建设、战略性新兴产业和国防科技工业中的重要基础材料,而铝土矿作为生产铝的最主要来源,是我国紧缺的大宗矿产之一,已被列入我国战略性矿产目录。本文基于2010年~2019年铝土矿行业数据,介绍了国内外铝土矿资源情况,分析了铝土矿行业近年走势及原因,并预计了其未来市场的发展趋势。 展开更多
关键词 铝土矿 市场分析
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光伏压延玻璃硅珠结石产生机理与分析 预览
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作者 杜秀红 李茂刚 《玻璃》 2019年第6期19-23,共5页
利用岩相分析、电子探针和光学显微镜,对光伏压延玻璃生产线产生的玻璃硅珠结石缺陷进行分析,鉴别出硅珠类结石为单质硅结石,来源于玻璃液中二氧化硅与杂质铝反应生成,同时伴随气泡产生,并对玻璃硅珠结石缺陷问题提出了有效的解决方法,... 利用岩相分析、电子探针和光学显微镜,对光伏压延玻璃生产线产生的玻璃硅珠结石缺陷进行分析,鉴别出硅珠类结石为单质硅结石,来源于玻璃液中二氧化硅与杂质铝反应生成,同时伴随气泡产生,并对玻璃硅珠结石缺陷问题提出了有效的解决方法,为全氧燃烧窑炉压延玻璃生产提供了技术参考。 展开更多
关键词 硅珠结石 压延玻璃
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Raw Material Industry Department Of MIIT:Strictly Control The New Capacity Of Electrolytic Aluminium
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《中国有色金属月刊:英文版》 2019年第6期6-7,共2页
On May 7,2019,the Raw Material Industry Department of MIIT held the forum on aluminium industry operation analysis in Beijing.13 key aluminum enterprises engaged in mining,smelting and processing,including CHALCO,SPIC... On May 7,2019,the Raw Material Industry Department of MIIT held the forum on aluminium industry operation analysis in Beijing.13 key aluminum enterprises engaged in mining,smelting and processing,including CHALCO,SPIC,Weiqiao Pioneering Group and Liaoning Zhongwang,attended the forum.Chang Guowu,vice-director of Raw Material Industry Department,chaired the forum. 展开更多
关键词 RAW Material INDUSTRY DEPARTMENT Of MIIT:Strictly CONTROL The NEW Capacity Of Electrolytic Aluminium
铝的雄性生殖毒性研究进展 预览
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作者 元辉雄 陈文成 《医学综述》 2019年第15期2993-2997,共5页
铝在地壳中的含量排名第三(仅次于氧和硅)。由于具有良好的理化特性,铝及其化合物被广泛应用于生产和生活中。铝非机体所必需的元素,但随着医学的发展及研究的深入,其对人体的毒性作用被逐渐揭示。铝对神经系统毒性作用的研究比较透彻,... 铝在地壳中的含量排名第三(仅次于氧和硅)。由于具有良好的理化特性,铝及其化合物被广泛应用于生产和生活中。铝非机体所必需的元素,但随着医学的发展及研究的深入,其对人体的毒性作用被逐渐揭示。铝对神经系统毒性作用的研究比较透彻,而随着近年来随着研究的拓展,人们发现铝对雄性动物生殖系统也有影响。 展开更多
关键词 雄性 生殖毒性
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Chemical Modification of Halloysite Nanotubes for the Preparation of Nanocomposites on Non Polar Matrix 预览
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作者 Alan Ramirez Guevara Jaime Bonilla Ríos Laura Eugenia Romero Robles 《机械工程与自动化:英文版》 2019年第4期128-132,共5页
In this study,we demonstrated the effects of chemical treatments for Halloysite nanotubes(HNTs)under acid and alkaline conditions using sulfuric acid and sodium hydroxide.XRD results indicate that alkaline treatment d... In this study,we demonstrated the effects of chemical treatments for Halloysite nanotubes(HNTs)under acid and alkaline conditions using sulfuric acid and sodium hydroxide.XRD results indicate that alkaline treatment destroyed the crystalline structure and morphology for HNTs because the XRD spectrum shows the typical peaks for montmorillonite.For the acid treatment using H2SO4,XRD spectrum indicates an intensity reduction for the peak(001)showing a lower concentration of aluminium in the structure.Diffuse reflectance analysis shows a reduction of 40 and 15%for reflectance with H2SO4 and NaOH treatments respectively.A terephthalic acid adsorption test was realized with the HNTs,modified halloysites(HNT-H2SO4)and(HNT-NaOH)samples with a kinetic study and it was quantified with UV spectroscopy at 240 nm where results shown a lower adsorption for HNTs treated with H2SO4 in comparison with alkaline treatment and not treated HNT.A decrease of 58%±0.3was achieved with the sulfuric acid treatment with not crystalline structure modification using ICP technique to quantify the sample compositions. 展开更多
关键词 HALLOYSITE NANOTUBES acid/basic treatment aluminium sulfate physical adsorption FOURIER-TRANSFORM infraredspectroscopy (FTIR) XRD DIFFUSE TRANSMITTANCE
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铝对蚕豆叶绿素荧光和叶绿素含量影响探讨 预览
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作者 张慧敏 刘东华 《绿色科技》 2019年第12期15-19,共5页
指出了酸雨及铝工业发展导致的铝毒害是限制植物生长的重要影响因子。选取蚕豆(Vicia faba L.)为材料,测定了不同浓度Al^3+胁迫下蚕豆生长发育,叶绿素荧光动力学参数、光合色素含量。结果表明:Al^3+胁迫抑制蚕豆幼苗生长,随着处理时间... 指出了酸雨及铝工业发展导致的铝毒害是限制植物生长的重要影响因子。选取蚕豆(Vicia faba L.)为材料,测定了不同浓度Al^3+胁迫下蚕豆生长发育,叶绿素荧光动力学参数、光合色素含量。结果表明:Al^3+胁迫抑制蚕豆幼苗生长,随着处理时间的延长和处理浓度的增加,Al^3+毒害现象加重。蚕豆幼苗根系受Al^3+毒害程度大于茎叶。Al^3+胁迫对蚕豆叶片的色素含量和叶片的潜在光化学效率(Fv/Fm)影响不大。低浓度Al^3+(10μM)胁迫对叶绿素荧光参数的影响较小,高浓度Al^3+(100?M)胁迫则明显降低了叶片实际光化学量子效率(ΦPSⅡ)和表观光合电子传递速率(ETR),PSⅡ有效光化学量子产量(Fv′/Fm′)也降低,同时非光化学淬灭系数(qN)上升。 展开更多
关键词 蚕豆 叶绿素含量 叶绿素荧光
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电感耦合等离子体质谱法检测红薯粉条中铝和钛含量的不确定度评定
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作者 夏用恢 罗诚 《食品安全质量检测学报》 CAS 2019年第14期4681-4686,共6页
目的评定电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry,ICP-MS)检测红薯粉条中铝和钛含量的不确定度。方法采用ICP-MS法测定红薯粉中铝和钛的含量,系统分析其不确定的来源,量化不确定度分量,计算扩展不确定度... 目的评定电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry,ICP-MS)检测红薯粉条中铝和钛含量的不确定度。方法采用ICP-MS法测定红薯粉中铝和钛的含量,系统分析其不确定的来源,量化不确定度分量,计算扩展不确定度。结果经评定,红薯粉中铝的含量为(3.079±0.50) mg/kg,钛的含量为(0.566±0.022) mg/kg。影响铝和钛测定不确定度的主要因素是样品中铝和钛浓度测定时的标准溶液稀释过程,其次是重复性试验和回收试验,样品称量和溶液定容可忽略不计。结论本方法客观可靠,有望为ICP-MS法检测其他食品中铝和钛含量的不确定度评定提供借鉴和参考。 展开更多
关键词 不确定度 电感耦合等离子体质谱法 红薯粉条
ICP–AES法测定镍铬铝钇硅合金中的铝、钇、硅 预览
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作者 贾梦琳 刘厚勇 +1 位作者 杨军红 赵欢娟 《化学分析计量》 CAS 2019年第4期80-82,共3页
建立电感耦合等离子体发射光谱测定镍铬铝钇硅合金中铝、钇、硅含量的方法。采用盐酸–硝酸(6∶1)混合酸溶解样品,通过基体匹配消除基体镍的干扰,铝、钇、硅的分析谱线分别为394.401,371.029,251.611nm。铝、钇、硅的质量浓度分别在1.00... 建立电感耦合等离子体发射光谱测定镍铬铝钇硅合金中铝、钇、硅含量的方法。采用盐酸–硝酸(6∶1)混合酸溶解样品,通过基体匹配消除基体镍的干扰,铝、钇、硅的分析谱线分别为394.401,371.029,251.611nm。铝、钇、硅的质量浓度分别在1.00~30.00,1.00~20.00,1.00~30.00mg/L范围内与其发射强度呈良好的线性,线性相关系数均大于0.999,检出限分别为0.013,0.002,0.064mg/L。加标回收率为94.60%~103.51%,测定结果的相对标准偏差均小于2%(n=11)。该方法快速、稳定,可用于实际生产中镍铬铝钇硅中铝、钇、硅元素的测定。 展开更多
关键词 电感耦合等离子体发射光谱法 镍铬铝钇硅
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Effect of fusion welding processes on tensile properties of armor grade, high thickness, non-heat treatable aluminium alloy joints 预览
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作者 K. Vasu H. Chelladurai +2 位作者 Addanki Ramaswamy S. Malarvizhi V. Balasubramanian 《Defence Technology(防务技术)》 CAS CSCD 2019年第3期353-362,共10页
AA5059 is one of the high strength armor grade aluminium alloy that finds its applications in the military vehicles due to the higher resistance against the armor piercing (AP) threats. This study aimed at finding the... AA5059 is one of the high strength armor grade aluminium alloy that finds its applications in the military vehicles due to the higher resistance against the armor piercing (AP) threats. This study aimed at finding the best suitable process among the fusion welding processes such as gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) by evaluating the tensile properties of AA5059 aluminium alloy joints. The fracture path was identified by mapping the low hardness distribution profile (LHDP) across the weld cross section under tensile loading. Optical and scanning electron microscopies were used to characterize the microstructural features of the welded joints at various zones. It is evident from the results that GTAW joints showed superior tensile properties compared to GMAW joints and this is primarily owing to the presence of finer grains in the weld metal zone (WMZ) and narrow heat-affected zone (HAZ). The lower heat input associated with the GTAW process effectively reduced the size of the WMZ and HAZ compared to GMAW process. Lower heat input of GTAW process results in faster cooling rate which hinders the grain growth and reduces the evaporation of magnesium in weld metal compared to GMAW joints. The fracture surface of GTAW joint consists of more dimples than GMAW joints which is an indication that the GTAW joint possess improved ductility than GMAW joint. 展开更多
关键词 GAS tungsten ARC WELDING GAS metal ARC WELDING ARMOR GRADE aluminium alloy TENSILE properties Microhardness
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铝热还原钛氧化物直接合金化机理研究 预览
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作者 尚德礼 《鞍钢技术》 CAS 2019年第4期20-23,共4页
用热力学计算及动力学变化机制分析的方法,对氧化钛在钢液中的还原行为进行了研究。在炼钢条件下,铝完全可以还原钛矿中的TiO2,粒径为10μm的TiO2颗粒全部转变成Al2O3的时间小于1.27s,铝粉和氧化钛粉混合物加入钢液,瞬间钛就会被铝还原... 用热力学计算及动力学变化机制分析的方法,对氧化钛在钢液中的还原行为进行了研究。在炼钢条件下,铝完全可以还原钛矿中的TiO2,粒径为10μm的TiO2颗粒全部转变成Al2O3的时间小于1.27s,铝粉和氧化钛粉混合物加入钢液,瞬间钛就会被铝还原,被还原出的金属钛可对钢液进行合金化,而且对整个冶炼体系不会造成不良后果。 展开更多
关键词 炼钢 氧化钛 直接合金化
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